This is Debian GNU/Linux's prepackaged version of xdemineur, which is
from the X11 contributed distribution.

This package was put together from the original sources at
  ftp://sunsite.doc.ic.ac.uk:/packages/X11/contrib/games/


The program is copyright 1993 Marc Baudoin
This debian package is copyright 1997 Mark Baker.

The original copyright message is:

     Copyright 1993-1999 Marc Baudoin <babafou@babafou.eu.org>

     Permission to use, copy, modify, and distribute this software and
     its documentation for any purpose and without fee is hereby granted,
     provided that the above copyright notice appear in all copies and that
     both that copyright notice and this permission notice appear in
     supporting documentation.  The author makes no representations about
     the suitability of this software for any purpose.  It is provided "as 
     is" without express or implied warranty.